Originally Posted by
Orangeeyecrayon /img/forum/go_quote.gif technichley ALS is a salt,
all a salt means is a metal and a nonmetal, or a second way is a non polarized body.
in this case it is a metal and a nonmetal compuound attatched to a carbon chain
No, a salt is a product from mixing an acid with a base and they become neutralized. This is one chemistry concept I definitely grasped the first time I learned it, lol.
Here's some info on ALS (I got it from wikipedia), no mention of salt (or metal) anywhere.
Ammonium lauryl sulfate (ALS) is the common name for ammonium dodecyl sulfate (CH3(CH2)10CH2OSO3NH4). The dodecyl signifies the presence of a 12-member carbon chain in the molecular backbone which allows the molecule to bond with non-polar portions of molecules while the highly polar sulfate head allows the molecule to bond with polar molecules such as water. ALS is classified as an
alkyl sulfate and is an
anionic surfactant found primarily in
shampoos and body-wash as a foaming agent.
[1] Lauryl sulfates are very high-foam
surfactants that disrupt the
surface tension of water by forming
micelles around the
polar water molecules.
Ammonium lauryl sulfate, like any other surfactant, makes a good base for cleansers because of the way it disrupts the hydrogen bonding in water. Hydrogen bonding is the primary contributor to the high surface tension of water. In
solution, the lauryl sulfate anions and the ammonium cations separate. The former align themselves into what is known as a
micelle, in which the ions form a sphere, with the polar heads (the sulfate) on the surface of the sphere and the nonpolar
hydrophobic tails pointing inwards towards the center. The water molecules around the micelle arrange themselves around the polar heads, but this disrupts their
hydrogen bonding with the water surrounding them. The overall effect of having these micelles in an aqueous (water) environment is that the water becomes more able to penetrate things like cloth fibers or hair, and also becomes more readily available to solvate anything coming off the aforementioned substance.
And SLS, again, no salt.
Sodium lauryl sulfate (
SLS) or
sodium dodecyl sulfate (
SDS or NaDS) (
C12
H25
SO4
Na) is an
anionic surfactant used in many cleaning and hygiene products. The molecule has a tail of 12 carbon atoms, attached to a
sulfate group, giving the molecule the
amphiphilic properties required of a
detergent.
SLS is a highly effective surfactant used in any task requiring the removal of oily stains and residues. As such the compound is found in high concentrations in industrial products including engine degreasers, floor cleaners, and car wash soaps. In household products, SLS is used in lower concentrations with
toothpastes,
shampoos,
shaving foams, some dissolvable
aspirins, fiber therapy caplets. It is an important component in
bubble bath formulations for its thickening effect and its ability to create a
lather.